Global Patent Index - EP 1235823 A1

EP 1235823 A1 2002-09-04 - H-ANNELLATED BENZO F]CHROMENES

Title (en)

H-ANNELLATED BENZO F]CHROMENES

Title (de)

H-ANNELLIERTE BENZO F]CHROMENE

Title (fr)

BENZO F]CHROMENES H ANNELES

Publication

EP 1235823 A1 (DE)

Application

EP 01956558 A

Priority

  • DE 10045848 A
  • EP 0108557 W

Abstract (en)

[origin: WO0222594A1] The invention relates to specific photochromic h-annellated benzo[f]chrome derivatives and the use thereof in all types of plastic material, especially for ophthalmic purposes. The invention relates specifically to photochromic compounds derived from benzo[f]chromenes, said compounds comprising in their open form particular long wave length absorption maxima, whereby a multitude of colours from violet to blue can be produced in applications in phototropic glass.

IPC 1-7 (main, further and additional classification)

C07D 311/78; C07D 311/94; C07D 493/06; C07D 498/06

IPC 8 full level (invention and additional information)

C07D 311/92 (2006.01); C07D 311/78 (2006.01); C07D 311/94 (2006.01); C07D 493/04 (2006.01); C07D 493/06 (2006.01); C07D 498/04 (2006.01); C07D 498/06 (2006.01); F16C 19/26 (2006.01); F16C 33/34 (2006.01); F16C 33/58 (2006.01)

CPC (invention and additional information)

C07D 493/04 (2013.01); C07D 311/78 (2013.01); C07D 311/94 (2013.01)

Citation (search report)

See references of WO 0222594A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family

WO 0222594 A1 20020321; AU 778377 B2 20041202; AU 7850501 A 20020326; CA 2390770 A1 20020321; CA 2390770 C 20090901; DE 50100383 D1 20030821; EP 1235823 A1 20020904; EP 1235823 B1 20030716; ES 2201041 T3 20040316; JP 2004509109 A 20040325; US 2003040623 A1 20030227; US 6686468 B2 20040203; ZA 200203275 B 20030724